Adsorbent for hydrocarbons, catalyst for exhaust gas...

Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Silicon containing

Reexamination Certificate

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Details

C502S400000, C502S414000, C502S262000, C502S350000, C502S304000, C502S355000, C502S349000, C423S700000

Reexamination Certificate

active

07981834

ABSTRACT:
An object of the present invention is to improve hydrocarbon adsorbing property when zeolite is used as an adsorbent for hydrocarbons. The present invention provides an adsorbent for hydrocarbons characterized by comprising A Type of β-zeolite having a SiO2/Al2O3ratio (molar ratio) in a range of 10 or more and less than 200 and B Type of β-zeolite having a SiO2/Al2O3ratio (molar ratio) in a range from 200 to 1,000, and a catalyst for exhaust gas purification containing said adsorbent for hydrocarbons.

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Office Action issued Oct. 16, 2009 by the People's Republic of China Patent Office in Chinese Patent Application No. 2007100875361 and English language translation thereof.
European Search Report dated Oct. 22, 2007.
European Office Action dated Oct. 29, 2007.

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